Start implementing screens for registering and logging in

php/Ping.php

@@ -7,6 +7,11 @@ $js = getJsonizedInput();
 $psk = "";
 $allow=false;
 
+$user = "";
+$display_name = "";
+$logged_in = false;
+$totalUsers = 0;
+
 if(!defined("CLIENTPSK")) {
     $allow=true;
 } else {
@@ -15,16 +20,33 @@ if(!defined("CLIENTPSK")) {
         // Authorized. Send the PSK value to the client
         $allow=true;
         $psk = PSK;
+
+        // Check session
+        if(isset($_SESSION['login'])) {
+            $logged_in = true;
+            $user = $_SESSION['user'];
+            $display_name = $_SESSION['display_name'];
+        }
     }else {
         $allow=false;
     }
 
+    $DB = get_DB();
+    // Query total number of users
+    $res = $DB->query("SELECT * FROM auth;");
+    $totalUsers = $res->num_rows;
+
+    $DB->close();
 }
 
 $ret = array(
     "type" => "S2CPong",
     "authorized" => $allow,
-    "psk" => $psk
+    "user" => $user,
+    "display_name" => $display_name,
+    "psk" => $psk,
+    "login" => $logged_in,
+    "user_count" => $totalUsers
 );
 
 die(json_encode($ret));